24AA32AXT-I/ST

Memory IC Overview

The Microchip Technology 24AA32AXT-I/ST is a 32-Kbit Electrically Erasable PROM (EEPROM) organized as a single block of 4K x 8-bit memory. It operates with a supply voltage range of 1.7V to 5.5V and supports I2C compatible two-wire serial interfaces at clock frequencies up to 400 kHz for VCC ≥ 2.5V, or 100 kHz for VCC < 2.5V. The device features a 32-byte page write buffer, hardware write-protect capability via the WP pin, and Schmitt trigger inputs for noise suppression. It is housed in an 8-lead X-Rotated TSSOP package and rated for industrial temperature ranges from -40°C to +85°C.

Memory IC Feature Summary

• Supports bidirectional two-wire serial interface compatible with I2C protocol
• Includes hardware write-protect functionality controlled by the WP pin
• Features a 32-byte page write buffer for efficient data storage operations
• Incorporates Schmitt trigger inputs to suppress noise spikes on SDA and SCL lines

Memory IC Applications

• Personal communications devices requiring low-power non-volatile storage
• Data acquisition systems needing reliable parameter retention
• Industrial control applications utilizing I2C bus architectures
• Embedded systems requiring hardware-level write protection

Memory IC Procurement Notes

Verify that the ordering suffix 'XT' corresponds to the specific tape and reel packaging configuration required for automated assembly processes. Confirm the 'I' designation aligns with the necessary industrial temperature operating range of -40°C to +85°C for your specific environmental conditions. Ensure compatibility with the 8-lead X-Rotated TSSOP footprint during PCB layout finalization.

Memory IC Selection Notes

Select this component when a 32-Kbit EEPROM capacity is required within a compact surface-mount form factor. The 24AA32A variant is appropriate for designs needing operation down to 1.7V, distinguishing it from the 2.5V minimum 24LC32A series. Consider the X-Rotated TSSOP package specifically if board space constraints necessitate its unique orientation relative to standard TSSOP layouts.

Memory IC Part Context

This part belongs to the 24XX32A family of 32-Kbit I2C Serial EEPROMs manufactured by Microchip Technology. The family includes variants such as 24AA32A and 24LC32A, which share identical functional specifications but differ in minimum operating voltage thresholds. The 24AA32A series is optimized for lower voltage applications compared to the 24LC32A series.

Memory IC Replacement Considerations

24AA32AT-I/MS

Memory IC FAQ

How does the WP pin function regarding write protection?

Connecting the WP pin to VCC inhibits all write operations while leaving read operations unaffected. Connecting it to VSS enables write operations.

What is the maximum clock frequency supported at low voltages?

For supply voltages below 2.5V, the maximum clock frequency is limited to 100 kHz. At voltages of 2.5V and above, it supports up to 400 kHz.

Can multiple devices be addressed on the same bus?

Yes, up to eight devices can be connected to the same bus using the A0, A1, and A2 chip address inputs to create unique client addresses.